/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.programrule.action.validation;

import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nonnull;
import org.hisp.dhis.common.IdentifiableObjectManager;
import org.hisp.dhis.dataelement.DataElement;
import org.hisp.dhis.option.Option;
import org.hisp.dhis.option.OptionGroup;
import org.hisp.dhis.preheat.Preheat;
import org.hisp.dhis.preheat.PreheatIdentifier;
import org.hisp.dhis.program.Program;
import org.hisp.dhis.program.ProgramStage;
import org.hisp.dhis.program.ProgramStageSection;
import org.hisp.dhis.program.notification.ProgramNotificationTemplate;
import org.hisp.dhis.programrule.ProgramRule;
import org.hisp.dhis.programrule.ProgramRuleAction;
import org.hisp.dhis.trackedentity.TrackedEntityAttribute;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author Zubair Asghar
 */
@Component
public class ProgramRuleActionValidationContextLoader {
  @Nonnull private final ProgramRuleActionValidationService validationService;

  private final IdentifiableObjectManager objectManager;

  public ProgramRuleActionValidationContextLoader(
      @Nonnull ProgramRuleActionValidationService actionValidationService,
      IdentifiableObjectManager manager) {
    this.validationService = actionValidationService;
    this.objectManager = manager;
  }

  @Transactional(readOnly = true)
  public ProgramRuleActionValidationContext load(
      Preheat preheat, PreheatIdentifier preheatIdentifier, ProgramRuleAction ruleAction) {
    ProgramRule rule =
        preheat.get(preheatIdentifier, ProgramRule.class, ruleAction.getProgramRule());

    Program program = preheat.get(preheatIdentifier, Program.class, rule.getProgram());

    if (program == null) {
      program = objectManager.get(Program.class, rule.getProgram().getUid());
      preheat.put(preheatIdentifier, program);
    }

    List<ProgramStage> stages =
        preheat.getAll(preheatIdentifier, new ArrayList<>(program.getProgramStages()));

    return ProgramRuleActionValidationContext.builder()
        .programRule(rule)
        .program(program)
        .programStages(stages)
        .dataElement(
            ruleAction.hasDataElement()
                ? preheat.get(preheatIdentifier, DataElement.class, ruleAction.getDataElement())
                : null)
        .trackedEntityAttribute(
            ruleAction.hasTrackedEntityAttribute()
                ? preheat.get(
                    preheatIdentifier, TrackedEntityAttribute.class, ruleAction.getAttribute())
                : null)
        .notificationTemplate(
            ruleAction.hasNotification()
                ? preheat.get(
                    preheatIdentifier,
                    ProgramNotificationTemplate.class,
                    ruleAction.getTemplateUid())
                : null)
        .programStageSection(
            ruleAction.hasProgramStageSection()
                ? preheat.get(
                    preheatIdentifier,
                    ProgramStageSection.class,
                    ruleAction.getProgramStageSection())
                : null)
        .programStage(
            ruleAction.hasProgramStage()
                ? preheat.get(preheatIdentifier, ProgramStage.class, ruleAction.getProgramStage())
                : null)
        .option(
            ruleAction.hasOption()
                ? preheat.get(preheatIdentifier, Option.class, ruleAction.getOption())
                : null)
        .optionGroup(
            ruleAction.hasOptionGroup()
                ? preheat.get(preheatIdentifier, OptionGroup.class, ruleAction.getOptionGroup())
                : null)
        .programRuleActionValidationService(validationService)
        .build();
  }
}
